Fast food company McDonald's is giving some diners a sneak peek at its newest monstrosity: a crab meat sandwich.

McDonald's is currently selling the new menu item at four of its San Jose-area locations. The sandwich, which consists of snow crab meat, mayonnaise, tomato, herbed butter, and lettuce on sourdough, was developed by "Top Chef" contestant Ryan Scott, who last year opened a tavern restaurant called Finn Town in the Castro district of San Francisco.